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En este trabajo nos centramos en la obtención y distribución de la obsidiana tipo Yuco, así como en lo que la diferencia de otras circulaciones de obsidianas en la región, particularmente su carácter lacustre/perilacustre. Sin embargo, el hallazgo de obsidiana Yuco en ambientes boscosos ubicados a 260 km al sur de la fuente, la ausencia de su registro en puntos intermedios como Traful y Nahuel Huapi, al igual que su inexistencia al oeste de la cordillera, nos invita a reflexionar sobre la tardía ocupación humana de los bosques patagónicos; así como a conocer y superar las limitaciones de las técnicas analíticas para identificar grupos geoquímicos de obsidianas, implementadas a lo largo de tres décadas, discutiendo principalmente las implicancias entre las metodologías y técnicas destructivas versus aquellas no destructivas. ENGLISH: Yuco Obsidian in the Andean Lakes and Forests of Northern Patagonia: Geochemical Characterization, Provenance and Spatiotemporal Distribution (1000–500 BP). Here we analyze the acquisition and distribution of Yuco obsidian in northern Patagonia, as well as what differentiates it from other obsidian types in the region, particularly near the numerous mountain lakes. The recovery of Yuco obsidian 260 km south of the source, yet absent in intermediate areas such as Traful and Nahuel Huapi, as well as west of the Andes, causes us to reflect on the nature of late human occupation of Patagonian forests. At the same time, we criticize the limitations of analytical techniques used to identify geochemical obsidian groups over the last three decades. In particular, we discuss the implications between destructive and non-destructive analytical methods.
Yuco obsidian, non-destructive analysis, northern Patagonia, Patagonian forest
Yuco obsidian, non-destructive analysis, northern Patagonia, Patagonian forest
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